Panasonic cs-pa7dkd Service Manual

Panasonic cs-pa7dkd Service Manual Manual pdf 51 page image

(Indoor unit) (Liquid side) (Outdoor unit)Open2-wayvalve(Gas side)Closed3-wayvalveClosedClosedLow High10.2. Pumping down(For Re-Installation)Procedure1.Confirm that both 2-way and 3-way valves are set to openpositions.Remove the valve stem cap and confirm that the valvestems are in the open position.Be sure using a hexagonal wrench to operate the valvestems.2.Operate the unit for 10-15 minutes.3.Stop operation and wait for 3 minutes, then connect thecharge set to the service port of the 3-way valve.Connect the charge hose with the push pin to theservice port.4.Air purging of the charge hose.Open the low-pressure valve of the charge set slightlyto purge air from the charge hose.5.Set the 2-way valve to the close position.6. Operate the air conditioner at the cooling cycle and stop itwhen the gauge indicates 2 G (0.1Mpa).If the unit cannot be operated at the cooling modeoperation (weather is rather cold), short the PumpingDown pins on the Main Control P.C.B.7. Immediately set 3-way valve to the closed position.Do this quickly so that the gauge ends up indicating1 to 3.kg/cmkg/cm G (0.1 to 0.3 Mpa).8. Use refrigerant reclaiming equipment to collect refrigerantfrom indoor unit and pipes.9. Disconnect the charge set, and mount the 2-way and 3-wayvalve stem s nuts and service port cap.Use torque wrench to tighten the service port cap to atorque 1.8kgf.m (18N.m).Be sure to check for gas leakage.10. Disconnect pipes from indoor unit and outdoor unit.22’51CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD